53 citations · 97 across the 5 of their papers we have counts for
5 papers
On singular limits of relative entropies
Feng Xu
In this paper we generalize a key result relating singular limits of certain relative entropies with index in the setting of conformal nets, which has played an important role rece…
Topological Defect Lines in Two Dimensional Fermionic CFTs
Chi-Ming Chang, Jin Chen, Fengjun Xu
We consider topological defect lines (TDLs) in two-dimensional fermionic conformal field theories (CFTs). Besides inheriting all the properties of TDLs in bosonic CFTs, TDLs in fer…
Permutation orbifolds and associative algebras
Chongying Dong, Feng Xu, Nina Yu
Let be a vertex operator algebra and be a -cycle which is viewed as an automorphism of the vertex operator algebra . It is pro…
Algebraic orbifold conformal field theories
Feng Xu
We formulate the unitary rational orbifold conformal field theories in the algebraic quantum field theory framework. Under general conditions, we show that the orbifold of a given…
Algebraic Conformal Field Theories II
Feng Xu
Some mathematical questions relating to Coset Conformal Field Theories (CFT) are considered in the framework of Algebraic Quantum Field Theory as developed previously by us. We con…